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mod_discodot/mod_discodot.lua @ 5711:429be658c0bb
mod_dnsupdate: Support advertising explicit non-existence of service
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 03 Nov 2023 23:26:57 +0100 (14 months ago) |
parent | 4577:253df0798996 |
rev | line source |
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4577
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mod_discodot: Print a graph of service discovery
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1 local cm = require("core.configmanager"); |
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2 |
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3 local function format_host(host, conf) |
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4 if host == "*" then |
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5 return "Global" |
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6 end |
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7 local component_module = conf["component_module"]; |
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8 if type(component_module) == "string" then |
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9 if component_module == "component" then |
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10 return string.format("Component %q", host) |
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11 else |
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12 return string.format("Component %q %q", host, component_module) |
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13 end |
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14 else |
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15 return string.format("VirtualHost %q", host) |
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16 end |
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17 end |
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18 |
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19 function module.command(arg) |
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20 |
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21 local config = cm.getconfig(); |
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22 |
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23 print("digraph \"prosody\" {") |
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24 for host, conf in pairs(config) do |
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25 print(string.format("%q [label=%q]", host, format_host(host, conf))); |
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26 local parent = host:match("%.(.*)"); |
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27 if parent and rawget(config, parent) then |
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28 print(string.format("%q -> %q", parent, host)); |
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29 end |
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30 local disco_items = conf["disco_items"] |
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31 if type(disco_items) == "table" then |
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32 for _, pair in ipairs(disco_items) do |
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33 print(string.format("%q -> %q", host, pair[1])); |
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34 end |
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35 end |
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36 |
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37 end |
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38 |
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39 print("}") |
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40 |
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41 return 0 |
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42 end |